ホーム > English > Q133. Term and Maintenance of Patent right

Q133. Term and Maintenance of Patent right

Q133. Term and Maintenance of Patent right
 How long can a patent right sustained?

A133. A term of a patent right starts from its registration and expires 20 years from its filing date. No adjustment of Patent Term, like in U.S., can be applied. The patent right requires annual fees for every year after its grant. Annuities for the first three years must have paid at the time of registration, and annuities for the fourth year or after must be paid before the year covered thereby. Six months delay in payment is permitted with additional surcharge equal to the annuity. In case of delay caused by a reason outside its patentee’s control, further six months period of payment can be permitted. Before the grant of the patent, no annuity, e.g. maintenance fee in European patent system, is required.